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Ayanava HG presentation 13 april 2010

Ayanava HG presentation 13 april 2010



This presentation was delivered on 13 April 2010 to the Home Grounds team of Alabama Cooperative Extension

This presentation was delivered on 13 April 2010 to the Home Grounds team of Alabama Cooperative Extension



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    Ayanava HG presentation 13 april 2010 Ayanava HG presentation 13 april 2010 Presentation Transcript

    • Pointers for Insect Control in Garden Vegetables
      Dr. Ayanava Majumdar
      Ext. Entomologist, State SARE Coordinator
      Tel: (251) 331-8416
    • Start with a Clean Garden
      Remove plant debris
      Bring weeds under control quickly
      Choose vigorous hybrids
      Choose good crop rotation (especially think disease carryover)
    • Insect monitoring with traps
      Pheromone traps are sold as kits by many companies (Planet Natural, Arbico Organics) and effective in detecting low insect populations.
      Shown here are two low-cost wing traps that can be used for monitoring corn earworm & tobacco budworm in the backyard.
    • ACES Insect monitoring project
      (started in 2009)
      • What does trap catch tell you?
      Catch = Density x Activity
      • Commercial traps/lures were used
      • Advantages of IPM traps: Specificity, Sensitivity, Simplicity, Safety
      Sites monitored for pest insects in 2009 commercial crops are marked with a star >>
    • Trap catches in 2009
      Insect catches (June-Oct.):
      Total = 8,586
      Lesser cornstalk borer = 3,586
      Fall armyworm = 1,386
      Beet armyworm = 1,377
      Corn earworm = 589
      Southern armyworm = 393
      Tobacco budworm = 342
      Soybean looper = 230
      Cabbage looper = 223
      Corn rootworm: Southern = 253; Western = 13
      Black cutworm = 125
      Diamondback moth = 65
      Tomato pinworm = 4
      European corn borer = 0
      Stink bugs = 0 (trap/lure problem)
      Expect these insects in your backyard too 
    • Insect monitoring with pit-fall traps
      Estimate insect activity on soil surface. Insects follow the guide sticks and drop into the trap (a ½ cup of water).
      Guide stick
    • Light trapping insects: The quick & easy way
      Water-filled bowl under porch light can be a simple light trap in summer. Add some dish detergent to the water to drown moths and beetles that will be attracted to the light. During rain, remember to remove the container. Keep records of your collection.
    • IF you do insect trapping…
      Maintain a record of start and finish each year
      Record number of insects in trap each week
      Draw chart of insect numbers and note the peak flight period (see next slide for example)
      Scout your main crop for larvae/crop damage
      Correlate the insect number in trap to actual crop damage
      Do these steps in multiple years and you will become a true entomologist!
      Be able to predict a pest outbreak using population data
    • Example of insect monitoring using pheromone trap:
      Corn earworm/tomato fruitworm
      Population density in Mobile & Baldwin Co.
      Monthly average activity
      Arrows (above) indicate peak activity periods.
      Year 2009
    • Try different IPM tactics
      Deep tillage, soil solarization…can expose and kill insects.
      Trap crops (squash, sunflower) for sucking pests + contact poison
      Trap crop (squash)
      Main crop
      Main crop
      Main crop
      (watermelon, cantaloupe, cucumber)
    • Try different IPM tactics
      Physical barriers to insects:
      • Reflective mulch (white, silvery)…when plants are small
      • Row covers for insect control (light weight material)
      • Insect nets from fine cotton material (sold in Walmart)
      • Plant collars to repel soil insects
      Use insecticides after proper identification & as a last resort…
    • Selecting Pesticides for Home Gardens: It is a Jungle out there!
      Insecticides displayed by bottle size, not the Active Ingredient (AI)
    • Who doesn’t love Malathion?
      • Spidermites, aphids, stink bugs
      • At least 7 companies make formulations
      • Read label before use in vegetables
    • Friend of friends – Bacillus thuringiensis(Bt)
      • Caterpillars in cool-season crops, tomatoes, pepper
      • Frequent appl., thorough coverage needed
      • 0 Pre Harvest Interval (PHI)
    • Pyrethrin on Vegetables
      Has sulfur, can burn leaves
      • Broad-spectrum
      • RTU on select vegetables
    • Green Light Organic Products
      (armyworm, loopers, cutworm, aphids, psyllids)
      Neem (oil)
      Neem II (oil + pyrethrin)
    • Insect control granules in vegetables
      • Contact & stomach poison
      • Back of the bag has broad vegetable label for ants, armyworms, grubs, etc.
      • Long residual
      Bifenthrin (AI) granules: can be applied once when preparing soil or after planting (mix well in soil). Bifenthrin spray or RTU can be applied multiple times 7 days apart. Try rotatin Sevin or BugBGon with alternative insecticides.
    • Bayer’s line-up of products…
      • Systemic poison
      • Apply at first sign of insects (aphid, thrips, WF, beetles)
      • Best as PoE drench
      Product on rebate on BayerAdvanced.com!
      Bayer Advanced FCV
    • Spinosad…a good rotation partner
      • Excellent for thrips, leafminers, looper, DBM, CPB, control
      • 1 day PHI
    • Toxicity of formulations
      Source: Penn State Univ. IPM Program
    • For downloading a quick chart on insecticides for home gardens, please visithttps://sites.aces.edu/group/commhort/vegetable/vegfactsheets/default.aspx